Flash light



Patented May -8, 1928.

UNITED STATES PATENT oFF-1era.'v

JOSEPH:

T. ROFFY, F BROOKLYN, NEW YORK, ASSIGNOR TO NATIONAL CARBON COM- PANY, INC., 0F NEW YORK, N. Y., A CORPORATIONUF NEW YORK FLASH LIGHT.

This invention relates to improvements inl iiashlights, and has for an object to provide means whereby the rays of light from the bulb can be focused without moving or ad? justing the bulb in its socket. The manner of accomplishing this result will be set forth in the following speciiication, reference being had to the accompanying drawing wherein A Figure 1 is a sectional view broken away and partly in elevation of a iiashlight embodylng my improvement. Figure 2 is a sectional view, partly in elevation, of a modified form of. my invention, and Figure 3 is a detail top plan view of the bulb-holder illustrated in Figure 2.

The form of fiashlight herein selected to illustrate my improvement consists of a tubular casing 1 constructed to retain a battery '2 of the usual variety. Threaded upon one end of the casing is the rotatable head 3. Atv the other end of the casing 1 is the threaded cap 4 carrying theusual spring 5 for pressing the battery 2 into contact with the bulb. The incandescent'lamp bulb 6 iscarried by a support 7k and isv threaded linto the socket or bulb holder 8 thereon. The support 7 is insulated from the." shell or casin 1 by the bushin 9 of insulating materia and substantia lycloses one end ot said casing. As will be evident, the head 3 is adapted to be rotated spirally for shifting it in the direction of `the axis 'of the casing.' The head 3 carries a glass 10 and a concave reiiector 11, the head and reliector assembly being insulated by the bushing 9 from the Support 7 and lamp holder 8. The reflector'll is provided with a central opening 12 to permit of the removal or' application of the head in- -depcndently of the bulb, the bulb being positioned centrally` within the opening andv out of contact with the reflector 11. As will be evident, when it is desired to focus the light emitted by the bulb, the reiiector 11 need only be/ moved toward or away from the bulb in the directibn of the axis of the shell by 'rotating the head. 3. In order to maintain the head in any adjusted position, after the light has been properly focused, a set-screw 13 is provided.- This set-screw is carried by the head 3 and passes through the Application led 'January 2, 1920. Serial No. 848,925.

threaded boss 14 for engagement with Hthecasin 1. In operation the focus of the light may e changed at will by loosening the setscrew 13 and adjusting the head in the manner described. j

In the modified form of device illustrated in Figure 2, the support 15 is provided, having a yieldable resilient bottom 16, the resiliency being secured by the slots 17. In other respects the support 15 is similar to the support 7 illustrated in Fieure 1, and

" the casing 1 Similarly carries the'reiiector,

lamp, lamp holder, and battery in axial alinement. To change the position of the bulb relatively to the reiiector in the device shown in Figure2 for focusing, the cap 4 threaded upon the lower end of the casing 1, will be rotated, thereby adjusting the tension of the spring 5, and the pressure upon the battery 2 and the bulb 6. The battery and the bu holder carrying the bulb are thus adjustable as a unit axially of the reflector and casing,

vand. the center electrode of saidfbattery is maintained in electrical connection with the lamp during such focusing adjustments. It will be evident that the resiliency of the bottom 16 of the support 15 will permit cony siderable movement of the bulb-holder 8 and `the bulb relatively to the reflector and allow,

the light to be easily focused by merely rotatably and axially adjusting the cap 4. Thev upper limit of the movement of the bulb is, indicated on the drawing by dotted lines..

When the bulb has been adjusted forwardly,- the resilient bottom 16 between the reflector and the battery acts as a spring means: to

shift the bulb 6 in the reverse direction, i. e.

rearwardly axially of the reflector, when the cap 4 is unscrewed.

To close the electrical circuit in both forms I of my improved ilashlight, I employ a switch mechanism, consisting of a slidable circuit closer 18 operated in the usual man ner by the button 19. The bottom face of each of the supports 7 and 15 has a disc of insulating material 9' secured thereto to serve as an abutment for the battery and insulate the latter from the lamp support when the lamp is removed from its socket or broken, thus preventing short-circuiting of the battery.

It is to be understood that the invention is not limited to the examples herein shown but may be practiced in various other ways.

Having described iny invention, what I claim is:

LA focusing flashlight comprising the combination of an incandescent lamp; a battery for energizing said lamp; a reflectorl having an opening through which said lamp projects; a holder carrying said lamp, a casing carrying said reflector, holder, lamp, and battery in axial alinement; and means for adjusting said holder and said lamp axially relatively to said reflector and said casing, such adjusting means comprising means rotatably and axially adjustable relatively to the axis of said casing, and said battery having a center electrode that is maintained in electrical connection with said lamp during the operation of such adjusting means.

2. In a flashlight, a casing, a yieldable bulb-holder at one end thereof consisting of a slotted plate, a bulb carried bythe holder, and projecting therethrough, a battery in the casing bearing against said bulb, and means to move the battery longitudinally of the casing to cause said holder to spring to change the focal position of the bulb.

3. In a flashlight, a casing, a yieldable bulb-holder at one end thereof: consisting of a slotted plate, a bulb carried by the holder, and projecting therethrough, a battery in the casing bearing against said bulb, and a rotatable cap at the opposite end of the casing to move the battery longitudinally of the casing to cause said bulb-holder to spring to change the focal position of the 4. In a portable electric light, a casing, a

lamp, a focusing reflector therefor, means for energizing the lamp, means for moving the reflector, a yieldable holder for said lamp, and means for moving the lamp and holder in said casing to focus the light.

5. In a battery hand lamp, the combination of a casing, a battery of dry cells therein, a lamp electrically connected n ith one terminal of said battery, a socket in which said lamp is threaded, a yielding support for said socket, a reflector insulated from said socket, and means for establishing electrical connection from the other terminal of said battery to said socket.

6. In a battery hand lamp, the combinai tion of a battery, a lamp in operative relation thereto, a casing for said battery, a resllient disc closlng the end of said casing .and in which said lamp is mounted, and a reflector for said lamp removable therefrom without disturbing the operative relation of said lamp to said battery, substantially'as described.

7. In a battery hand lamp, the combination of' n battery, a casing therefor, a lamp, a

socket for said lamp, a yielding disc closing the end of said casing and supporting said socket, a reflector insulated from said socket and having a central opening through Which the lamp bulb will pass, and means for detachably supportingl said reflector in operative relation to said lamp.l

8. In a battery hand lamp, the combinzv tion of a battery, a lamp in operative relation thereto, a socket for said lamp,l a yielding disc engaging and supporting said socket to cushion any impact of the battery on said lamp, a reflector insulated fronrsaid socket, and means for moving said reflector With respect to said socket when the distribution of light from said lamp is to be altered.

9. In a battery hand lamp, the combination of a casing, a battery therein, a lamp electrically connected with one terminal of said battery, an adjustable socket for said lamp, a reflector insulated from said socket and adjustable axially of said casing and relatively to said lamp, means operable to adjust said socket and lamp relatively to said reflector, and means' for establishing electrical connection from the other terminal of said battery to said socket.

l0. In a battery hand lamp, the combination of a battery, a casing therefor', a lamp connected With said battery, a 4reflector for said lamp, a socket for said lamp, movable with respect to said reflector, a disk of insulating material secured to said socket and serving to insulate the same from the battery when the lamp is removed from the socket, means for completing the battery circuit through said lamp, and means for moving said battery to focus said lamp in said l reflector.

ll. In a battery hand lamp, a casing` a yieldably mounted bulb holder, a reflector, a lamp bulb projecting through said reflector into said holder, a battery Within said casing in electrical contact with one terminal of said lamp, means for moving the battery longitudinally of the casing for shifting the position vof said lamp bulb with respect to said reflector, and means for moving said reflector While maintaining operative relation between said battery and said lamp.

l2. In a battery hand lamp, the combination of a casing, al battery therein, a lamp in electrical connection with said battery, a

.socket for said lamp, a yielding disk supporting said socket, a reflector for said lamp having a central opening through which the bulb of the lamp Will pass, and means for moving ,said reflector while maintaining operative relation between said battery and said lamp.

.13. In a battery hand lamp, a metal casing, a reector carried at one end of said casing, a movable bulb holder Within said Aand means for adjusting movable longitudinally of said casing, vmeansfor completing the lbattery circuit through the lamp bulb, means 'for preventing short circuiting of the battery when the lamp bulb is removed or4 when its filament is broken, the position of the battery to focus the lamp.

14:. In a batter. hand lamp, the combination of a yieldab y mounted bulb holder, a

battery, and means movable with the bulb holder to insulate said holder from the battery when the bulb is removed from said holder to prevent short circuiting of the bat! ter 1y5. In a battery-hand lamp, the combination of a longitudinallyyieldable bulb holder, a reflector, a battery, means carried by the bulb holder to insulate the samefroin the battery when the bulb is removed from the holder, and meansfor moving the hattery to adjust the position of the bulb holder with relation to the reflector.

16. In a battery handlamp, a reflector, a bulb holder, 'a bulb carried by said holder, means for mounting. said bulb holder so as to permit spring resisted-'movementof the saine along the axis rof the reflector, a battery, an insulating element movable with .said bulb holderand located between the same and said battery for preventing short circuiting of the'battery when the bulb is removed from its holder, and means for moving the battery to focus said lamp.

17. In a battery hand lamp, a casing, a battery carried therein, a reflector, a movable bulb holder, a bulb in said holder, a cap threaded to one end of said casing, and means carried by said cap, and forming an abutment for said battery whereby said lamp may be moved withrelation to said reflector by movement of said cap.

18. In a battery hand lamp, a casing,.a reflector carried at one end of said casing, 'a bulb holder movable with respect to said reflector, a bulb carried by said holder, a

battery movable within said casing, a threaded cap closing the other end of said casing, and means between said battery and said cap forming an abutment. for said battery whereby the battery may be moved to adjust the position 'of said bulb with re spect to said reflector.

19. In a flashlight, a reflector, an aperture in the reflector, an incandescent bulb adapted to move along aline passing through said aperture, a spring arranged to urfre said bulb in one direction, and a battery adjustable with respect to the` reflector and arranged to variably position the bulb therein.

20. A portable focusing electric light com prising the combination of a reflector meine ber; an incandescent lamp member associated therewith; one of said members being adjustable relatively to the other of said meinbers, a battery for energizing said lamp member; a casing carrying said reflector, lamp, and battery axially in alinement; and means for adjusting the said members relatively to one another comprising means for moving said battery and the adjustable member as a unit axially of said casing.

21. A portable focusing electric light as claimed in claim 20, wherein such adjusting means comprises resilient means yie dingly opposing the movement of said unit in one direction. Y

' 22. A `portable focusing electric light as claimed in claim 20, wherein such inoving means comprises a device adjustable rotatably and axially relatively to said casing. 23. A portable focusing electric light comprising the combination of a reflector member, an incandescent lamp member associated therewith; one of' said members being adjustable relatively to the other of said members, a battery for energizing said lamp member; a casing carrying said reflector,A

lamp, and battery axially in alineinent; and means for adjusting said battery and the adjustable member as a unit axially of said casing and relatively to the other of said members to focus the light from said lamp,`

such means comprising a cap adjustably coupled to one end of said casing.

24. A portable focusing electric light comprising theJ combination of an incandescent lamp; a battery forv energizing said lamp; a reflector having an opening through which said lamp projects; a casing carrying said battery,- lamp, and reflector in axial alinemcnt; and means operative to adjust said lamp and said reflector axially relatively to `one another to focus the light 'from said lamp-,such .means including spring means disposed between said reflector and said battery.

25. In a flashlight, the combination of an incandescent lamp; a battery operatively associated with said lamp; a casing for Said battery; a support substantially closing one end of said casing and comprisingl an insulating member fitting in said casing and a current-conducting member carried by said insulating member; a holder for said lamp carried by said support and in circuit with said current-carrying member; and a reflector associated with said lamp andinovable axially of said casing without disturbing the operative relation of-said lamp to said bat-- tery. v

26. In a focusing flashlight, the combination of a battery; an incandescent lamp in circuit therewith; a tubularcasing for said battery and coaxiall therewith; a support 4l mesme substantially closing one end of said casing ing through which said lamp projects; end. and comprising an annular insulating memmeans whereby said reflector is adjustable ber fitting in said casin and current-conaxially of said socket and said lamp to o- 10 ducting member carried y said insulating cus the light from seidlamp.

5 member; a. threaded socket for said lamp In testimony whereof, I have alixed my carried by said support; a reflector insulated signature to this specification. from said socket and having a central open- Y. JOSEPH T. ROFFY. 

